GPT-6.1 Terra Pro vs Qwen3.5 Plus 2026-02-15
Price, context window & benchmark comparison
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Verdict: Qwen3.5 Plus 2026-02-15 is 3.4× cheaper than GPT-6.1 Terra Pro on a typical 3:1 input/output mix. GPT-6.1 Terra Pro has the larger context window (1.1M vs 1M).
| GPT-6.1 Terra Pro | Qwen3.5 Plus 2026-02-15 | |
|---|---|---|
| Input price / 1M | $1.00 | $0.26 |
| Output price / 1M | $5.00 | $1.56 |
| Blended price (3:1) | $2.00 | $0.58 |
| Cached input / 1M | $0.05 | — |
| Context window | 1.1M | 1M |
| Max output | 128K | 66K |
| Intelligence index | — | — |
| Coding index | — | — |
| Providers | 6 | — |
| Best provider uptime (30m) | 100.0% | — |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-10-26 | 2026-02-16 |
| Retirement | — | — |
Cost calculator
FAQ
Which is cheaper, GPT-6.1 Terra Pro or Qwen3.5 Plus 2026-02-15?
Qwen3.5 Plus 2026-02-15 is 3.4× cheaper than GPT-6.1 Terra Pro on a typical 3:1 input/output mix.
GPT-6.1 Terra Pro vs Qwen3.5 Plus 2026-02-15: which has a bigger context window?
GPT-6.1 Terra Pro: 1,050,000 tokens. Qwen3.5 Plus 2026-02-15: 1,000,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GPT-6.1 Terra Pro ≈ $4,500, Qwen3.5 Plus 2026-02-15 ≈ $1,300.
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